Ask your own question, for FREE!
Mathematics 7 Online
OpenStudy (anonymous):

help needed with reading graph and writing an equation please. :)

OpenStudy (anonymous):

The shaded region in the graph represents the solutions of this system of linear inequalities. Use the symbols <, >, <=, and >= for inequality signs y _________ 4x +__________ y ≤________ x + __________

OpenStudy (anonymous):

OpenStudy (anonymous):

@welshfella wish you were here. :(

OpenStudy (welshfella):

the 'lower' line has a y-intercept of -5 and a slope of 16/4 = 4 so can you write the equation of that line?

OpenStudy (welshfella):

well the inequality of the line i should say

OpenStudy (welshfella):

its of the form <= mx + b where m = slope and b = intercept on the y-axis can you see how i got -5 for y-intercept?

OpenStudy (welshfella):

the line is continuous - thats why it <=

OpenStudy (anonymous):

y-5<4x yes

OpenStudy (welshfella):

no

OpenStudy (anonymous):

you're gonna hate me after helping me withthis one :(

OpenStudy (welshfella):

lol - i hate you already ! ( not really) y <= mx + b y <= 4x - 5 (b = -5)

OpenStudy (welshfella):

that is the first part

OpenStudy (anonymous):

y<4x+-5

OpenStudy (anonymous):

that doesn't look right

OpenStudy (anonymous):

just saw your post not funny lol see how slow i am

OpenStudy (welshfella):

yes but we can wipe out the first + also its <= not < because the inequality includes the values on the line (because the line is unbroken)

OpenStudy (anonymous):

y <= 4x - 5

OpenStudy (welshfella):

its would be dotted or 'dashed' if these values were not included

OpenStudy (welshfella):

right now where does the other line intersect the y-axis ? - this is the value of 'b' in the equation

OpenStudy (anonymous):

y is less than or equal to 4x-5

OpenStudy (welshfella):

yes thats the first part what about the second?

OpenStudy (anonymous):

3,11

OpenStudy (anonymous):

no wrong again

OpenStudy (welshfella):

no this one::- |dw:1431788861364:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!